7-9 hours is the good range.
8 hours is taken to be a good and agreed estimate.
How many hours does it sleep
8 hours is a good amount of sleep to get. For some reason, certain people feel fine with 4-6 hours, but its a better idea to get at least 8 hours, especially teens since you are growing so much, you need all the sleep you can get.
The amount of sleep a person needs varies from individual to individual. Generally, it is good to get eight hours of sleep, though.
at least 8-10 hours sleep
Minimum 6 hours sleep in a day is good for nine year old girl's health.
if you mean how many hours you should sleep in a year it would be 3,650 hours of sleep for a regular year not a leap year
You should sleep seven to eight hours to be ready for a good days work and not be tired.
about 10 hours of sleep
you must get atleast 9 hours of sleep
I sleep about 7 to 9 hours a day